Ornamental begonias, particularly varieties grown for their richly patterned, almost metallic-looking foliage, add a genuinely unusual visual texture that few other balcony plants can match. Like the other plants on this list, they generally prefer bright, indirect light and tend to scorch or fade when exposed to harsh, direct afternoon sun, making the softer conditions of a morning-only balcony a comfortable fit. Consistent moisture without waterlogging, and a bit of extra humidity where possible, keeps their foliage looking its most vivid.